Someone who's interest in cycling extends beyond mere enjoyment of the sport, and who is overly infatuated with the equipment itself. Obsessed with purchasing, or at least admiring, the very latest, overpriced frames, components, and even the apparel worn like spandex shorts and carbon fiber shoes.

A bike geek will spend $8,000 on a pro racing bike just to ride laps around Prospect Park, and then keep it next to his bed at night.